These are 100% combed cotton sheet sets sewed in triple marrow style, we can do these sheet sets in all thread counts ranging from 300 TC up to 1200 TC (made from pure cotton). This enables the fabric's luster to provide a very nice and soft feel. The residual shrinkage after wash for these sheets is less than 3%. ULTRA-SOFT COTTON SHEETS WITH LUSTROUS SATEEN WEAVE - Give into the look and feel of hotel-like bed sheets and smooth pillowcases with our sheet set. Made of 100% natural and sustainable long-staple cotton with 400 threads per inch, and lustrous sateen weave, the premium cotton sheet sets are densely woven to be long-lasting, ultra-soft, and authentic, unlike cheap microfiber sheets with a lower thread count which look worn out and tear easily after few washes CERTIFIED STANDARD 100 by OEKO-TEX® - All our sheets are MADE IN GREEN (traceable consumer label) and STANDARD 100 by OEKO-TEX®. According to the guidelines, these products are tested for harmful substances and produced in an environmentally friendly and socially responsible manner. Each fabric batch is also tested for various durability features such as no-pilling, low shrinkage, color-fastness, etc. They are then stitched, individually inspected and checked for defects, and finally packed for sales.